Johan Herland <> writes:

> I just found a failure to checkout a project with submodules where
> there is no explicit submodule branch configuration, and the
> submodules happen to not have a "master" branch:
>   git clone git:// qt5
>   cd qt5
>   git submodule init qtbase
>   git submodule update
> In current master, the last command fails with the following output:

... and with a bug-free system, what does it do instead?  Just clone
'qtbase' and make a detached-head checkout at the commit recorded in
the superproject's tree, or something else?

>   Cloning into 'qtbase'...
>   remote: Counting objects: 267400, done.
>   remote: Compressing objects: 100% (61070/61070), done.
>   remote: Total 267400 (delta 210431), reused 258876 (delta 202642)
>   Receiving objects: 100% (267400/267400), 136.23 MiB | 6.73 MiB/s, done.
>   Resolving deltas: 100% (210431/210431), done.
>   Checking connectivity... done.
>   error: pathspec 'origin/master' did not match any file(s) known to git.
>   Unable to setup cloned submodule 'qtbase'
> Bisection points to 23d25e48f5ead73c9ce233986f90791abec9f1e8 (W.
> Trevor King: submodule: explicit local branch creation in
> module_clone). Looking at the patch, it seems to introduce an implicit
> assumption on the submodule origin having a "master" branch. Is this
> an intended change in behaviour?

If an existing set-up that was working in a sensible way is broken
by a change that assumes something that should not be assumed, then
that is a serious regression, I would have to say.

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